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  <title>Get a meaningful error message for the last error generated</title>
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  <div id="layout-content"><div id="function.ingres-error" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">ingres_error</h1>
  <p class="verinfo">(PECL ingres &gt;= 1.1.0)</p><p class="refpurpose"><span class="refname">ingres_error</span> &mdash; <span class="dc-title">Get a meaningful error message for the last error generated</span></p>

 </div>
 
 <div class="refsect1 description" id="refsect1-function.ingres-error-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>ingres_error</strong></span>
    ([ <span class="methodparam"><span class="type">resource</span> <code class="parameter">$link</code></span>
  ] ) : <span class="type">string</span></div>

  <p class="para rdfs-comment">
   Returns a string containing the last error, or NULL if no error has
   occurred.
  </p>
  <p class="para">
   If a <code class="parameter">link</code> resource is passed to
   <span class="function"><strong>ingres_error()</strong></span>, it returns the last error recorded for
   the link. If no link is passed then <span class="function"><strong>ingres_error()</strong></span>
   returns the last error reported using the default link.
  </p>
  <p class="para">
   The function, <span class="function"><strong>ingres_error()</strong></span>, should always be called
   after executing any database query.  Calling another function before
   <span class="function"><strong>ingres_error()</strong></span> is called will reset or change any
   error message from the last Ingres function call.
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-function.ingres-error-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>

    
     <dt>
<code class="parameter">link</code></dt>

     <dd>

      <p class="para">
       The connection link identifier
      </p>
     </dd>

    
   </dl>

  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.ingres-error-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   Returns a string containing the last error, or NULL if no error has
   occurred.
  </p>
 </div>



 <div class="refsect1 examples" id="refsect1-function.ingres-error-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-1301">
    <p><strong>Example #1 Get a message for the last error generated</strong></p>
    <div class="example-contents">
<div class="phpcode"><pre><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$link&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">ingres_connect</span><span style="color: #007700">(</span><span style="color: #0000BB">$database</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$user</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$password</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$result&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">ingres_query</span><span style="color: #007700">(</span><span style="color: #0000BB">$link</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"select&nbsp;*&nbsp;from&nbsp;table"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$error_text&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">ingres_error</span><span style="color: #007700">();<br /><br />if&nbsp;(!</span><span style="color: #0000BB">is_null</span><span style="color: #007700">(</span><span style="color: #0000BB">$error_text</span><span style="color: #007700">))&nbsp;{<br />&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #DD0000">"An&nbsp;error&nbsp;occurred&nbsp;-&nbsp;"&nbsp;</span><span style="color: #007700">.&nbsp;</span><span style="color: #0000BB">$error_text</span><span style="color: #007700">;<br />}<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</pre></div>
    </div>

   </div>
  </p>
 </div>


 <div class="refsect1 seealso" id="refsect1-function.ingres-error-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="ingres_errno.html" class="function" rel="rdfs-seeAlso">ingres_errno()</a> - Get the last Ingres error number generated</span></li>
    <li class="member"><span class="function"><a href="ingres_errsqlstate.html" class="function" rel="rdfs-seeAlso">ingres_errsqlstate()</a> - Get the last SQLSTATE error code generated</span></li>
    <li class="member"><span class="function"><a href="ingres_next_error.html" class="function" rel="rdfs-seeAlso">ingres_next_error()</a> - Get the next Ingres error</span></li>
   </ul>
  </p>
 </div>


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